Home / 15,882.48-21,917.79-8,614.62

Finding the Fourth Proportional to 15,882.48, 21,917.79 and 8,614.62

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Solution

The fourth proportional to 15,882.48, 21,917.79 and 8,614.62 is: 11,888.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,882.48 : 21,917.79 = 8,614.62 : x
  2. Step 2: Convert to fraction form
    15,882.48/21,917.79 = 8,614.62/x
  3. Step 3: Cross multiply
    15,882.48x = 21,917.79 × 8,614.62
  4. Step 4: Simplify right side
    15,882.48x = 188,813,432.09
  5. Step 5: Solve for x
    x = 188,813,432.09/15,882.48
  6. Step 6: Final answer
    x = 11,888.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.